IEC 62135-2:2015

Resistance welding equipment - Part 2: Electromagnetic compatibility (EMC) requirements

IEC 62135-2:2015 is applicable to equipment for resistance welding and allied processes which are connected to mains supplies with rated voltages up to 1 000 V a.c. r.m.s. This standard does not define safety requirements. This second edition cancels and replaces the first edition published in 2007 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- update of the applicable limits related to the updated reference to CISPR 11;
- exclusion of the use of narrow band relaxations for RF emission limits;
- update of the applicable limits for harmonics and flicker related to the updated reference to IEC 61000-3-11 and IEC 61000-3-12;
- update of the requirements for voltage dips related to the updated reference to IEC 61000-4-11 and IEC 61000-4-34;
- inclusion of symbols to indicate the RF equipment class and restrictions for use;
- inclusion of EM field immunity test for frequency from 1,4 GHz to 2,7 GHz;
- inclusion of emission limits for class B resistance welding equipment magnetic fields between 150 kHz and 30 MHz.

Matériels de soudage par résistance - Partie 2: Exigences de compatibilité électromagnétique (CEM)

L'IEC 62135-2:2015 est applicable aux matériels de soudage par résistance et procédés connexes qui sont connectés aux réseaux d'alimentation avec des tensions assignées jusqu'à 1 000 V c.a. eff. La présente Norme ne définit pas d'exigences de sécurité. Cette deuxième édition annule et remplace la première édition parue en 2007. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- mise à jour des limites applicables conformément à la référence mise à jour à la CISPR 11;
- exclusion de l'utilisation d'allègements à bande étroite pour les limites d'émission RF;
- mise à jour des limites applicables aux harmoniques et au papillotement conformément à la référence mise à jour à l'IEC 61000-3-11 et à l'IEC 61000-3-12;
- mise à jour des exigences relatives aux creux de tension conformément à la référence mise à jour à l'IEC 61000-4-11 et à l'IEC 61000-4-34;
- inclusion de symboles pour indiquer la classe du matériel RF et les restrictions d'utilisation;
- inclusion de l'essai d'immunité aux champs EM pour les fréquences de 1,4 GHz à 2,7 GHz;
- inclusion de limites d'émission pour les champs électromagnétiques des matériels de soudage par résistance de classe B entre 150 kHz et 30 MHz.

General Information

• Status: Published
• Publication Date: 23-Feb-2015
• ICS: 25.160.30 - Welding equipment
• Technical Committee: TC 26 - Electric welding
• Drafting Committee: WG 1 - TC 26/WG 1
• Current Stage: DELPUB - Deleted Publication
• Start Date: 29-Jun-2018
• Completion Date: 30-Mar-2020

Relations

• Revised: IEC 62135-2:2020 - Resistance welding equipment - Part 2: Electromagnetic compatibility (EMC) requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62135-2


®


Edition 2.0 2015-02



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE


Resistance welding equipment –
Part 2: Electromagnetic compatibility (EMC) requirements

Matériels de soudage par résistance –
Partie 2: Exigences de compatibilité électromagnétique (CEM)

IEC 62135-2:2015-02(en-fr)

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IEC 62135-2



®



Edition 2.0 2015-02







INTERNATIONAL





STANDARD







NORME



INTERNATIONALE











Resistance welding equipment –

Part 2: Electromagnetic compatibility (EMC) requirements




Matériels de soudage par résistance –

Partie 2: Exigences de compatibilité électromagnétique (CEM)

















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 25.160 ISBN 978-2-8322-2257-7



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – IEC 62135-2:2015 © IEC 2015



CONTENTS



FOREWORD . 4

1 Scope . 6

2 Normative references . 6


3 Terms and definitions . 8

4 General test requirements . 9

4.1 Test conditions . 9

4.2 Measuring instruments . 9
4.3 Artificial mains network . 9
4.4 Voltage probe . 9
4.5 Antennas . 9
5 Test set-up for emission and immunity . 9
5.1 General requirements . 9
5.2 Ancillary equipment . 10
6 Emission tests . 10
6.1 Classification of equipment . 10
6.1.1 Class A equipment . 10
6.1.2 Class B equipment . 11
6.2 Test conditions . 11
6.2.1 Test conditions for RF tests . 11
6.2.2 Test conditions for low-frequency tests . 11
6.3 Emission limits . 12
6.3.1 Mains terminal disturbance voltage . 12
6.3.2 Electromagnetic radiation disturbance . 13
6.3.3 Low-frequency emission limits . 13
7 Immunity tests . 13
7.1 Tests applicability . 13
7.2 Test conditions . 14
7.3 Immunity performance criteria . 14
7.3.1 Performance criteria A . 14
7.3.2 Performance criteria B . 14
7.3.3 Performance criteria C . 14
7.4 Immunity levels . 15

8 Documentation for the purchaser/user . 16
Annex A (informative) Limits . 18
A.1 General . 18
A.2 Mains terminal disturbance voltage limits . 18
A.3 Electromagnetic radiation disturbance limits . 18
A.4 Harmonic current limits . 20
A.5 Limits for voltage fluctuations and flicker . 22
Annex B (informative) Symbols . 24
Bibliography . 25

Figure 1 – Test position for H field measurement . 10

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IEC 62135-2:2015 © IEC 2015 – 3 –




Table 1 – Immunity levels – Enclosure . 15


Table 2 – Immunity levels – AC input power port . 15

Table 3 – Immunity levels – Ports for measurement and control . 16

Table A.1 – Mains terminal disturbance voltage limits, idle state . 18


Table A.2 – Mains terminal disturbance voltage limits, load conditions . 18

Table A.3 – Electromagnetic radiation disturbance limits, idle state . 19

Table A.4 – Electromagnetic radiation disturbance limits, load conditions . 19


Table A.5 – Magnetic field emission limits for Class B equipment . 20
Table A.6 – Maximum permissible harmonic current for equipment with input current
I ≤ 16 A . 20
1cc
Table A.7 – Current emission limits for equipment with 16 A < I ≤ 75 A other than
1cc
balanced three-phase equipment . 21
Table A.8 – Current emission limits for balanced three-phase equipment with input
current 16 A < I ≤ 75 A . 21
1cc
Table A.9 – Current emission limits for balanced three-phase equipment with input
current 16 A < I ≤ 75 A under specified conditions . 21
1cc
Table A.10 – Current emission limits for balanced three-phase equipment with I ≤
1cc
75 A under specified conditions (d, e, f) . 22
Table A.11 – Limits for resistance welding equipment I ≤ 75 A . 23
1cc
Table B.1 – Symbols to describe EMC properties . 24

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INTERNATIONAL ELECTROTECHNICAL COMMISSION


____________




RESISTANCE WELDING EQUIPMENT –



Part 2: Electromagnetic compatibility (EMC) requirements



FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62135-2 has been prepared by IEC technical committee 26:
Electric welding.
This second edition cancels and replaces the first edition published in 2007 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– update of the applicable limits related to the updated reference to CISPR 11;
– exclusion of the use of narrow band relaxations for RF emission limits;
– update of the applicable limits for harmonics and flicker related to the updated reference
to IEC 61000-3-11 and IEC 61000-3-12;
– update of the requirements for voltage dips related to the updated reference to IEC 61000-
4-11 and IEC 61000-4-34;

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IEC 62135-2:2015 © IEC 2015 – 5 –


– inclusion of symbols to indicate the RF equipment class and restrictions for use;

– inclusion of EM field immunity test for frequency from 1,4 GHz to 2,7 GHz;


– inclusion of emission limits for class B resistance welding equipment magnetic fields

between 150 kHz and 30 MHz.

The text of this standard is based on the following documents:


FDIS Report on voting

26/555FDIS 26/557/RVD




Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The list of all the parts of the IEC 62135 series, under the general title Resistance welding
equipment, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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– 6 – IEC 62135-2:2015 © IEC 2015



RESISTANCE WELDING EQUIPMENT –



Part 2: Electromagnetic compatibility (EMC) requirements








1 Scope


This part of IEC 62135 is applicable to equipment for resistance welding and allied processes

which are connected to mains supplies with rated voltages up to 1 000 V a.c. r.m.s. This
standard does not define safety requirements.
Resistance welding equipment type tested in accordance with, and which has met the
requirements of, this standard, is deemed to be in compliance for all applications.
The frequency range covered is from 0 Hz to 400 GHz.
This product EMC standard for resistance welding equipment takes precedence over all
aspects of the generic standards and no additional EMC tests are required or necessary.
NOTE 1 Typical allied processes are resistance hard and soft soldering or resistance heating achieved by means
comparable to resistance welding equipment.
NOTE 2 Limit values are specified for only part of the frequency range.
Resistance welding equipment are classified as class A and class B equipment.
This part of IEC 62135 specifies
a) test methods to be used in conjunction with CISPR 11 to determine radiofrequency (RF)
emission;
b) relevant standards and test methods for harmonic current emission, voltage fluctuation
and flicker.
NOTE 3 The limits in this standard cannot, however, provide full protection against interference to radio and
television reception when the resistance welding equipment is used closer than 30 m to the receiving antenna(e).
NOTE 4 In special cases, when highly susceptible apparatus is being used in close proximity, additional
mitigation measures are sometimes employed to further reduce the electromagnetic emissions.
This part of IEC 62135 also defines immunity requirements and test methods for continuous
and transient, conducted and radiated disturbances including electrostatic discharges.

NOTE 5 These requirements do not, however, cover extreme cases which are extremely rare.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60050-161, International Electrotechnical Vocabulary – Chapter 161: Electromagnetic
compatibility
IEC 60050-851, International Electrotechnical Vocabulary – Part 851: Electric welding

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IEC 62135-2:2015 © IEC 2015 – 7 –


IEC 61000-3-2:2014, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for

harmonic current emissions (equipment input current ≤ 16 A per phase)


IEC 61000-3-3:2013, Electromagnetic compatibility (EMC) – Part 3: Limits – Limitation of

voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for

equipment with rated current ≤ 16 A per phase and not subject to conditional connection


IEC 61000-3-11:2000, Electromagnetic compatibility (EMC) – Part 3-11: Limits – Limitation of

voltage changes, voltage fluctuations and flicker in public low-voltage supply systems –

Equipment with rated current ≤ 75 A and subject to conditional connection


IEC 61000-3-12:2011, Electromagnetic compatibility (EMC) – Part 3-12: Limits for harmonic
currents produced by equipment connected to public low-voltage systems with input current >
16 A and ≤ 75 A per phase
IEC 61000-4-2, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement
techniques – Electrostatic discharge immunity test
IEC 61000-4-3, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement
techniques – Radiated, radio frequency, electromagnetic field immunity test
IEC 61000-4-4, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement
techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement
techniques – Surge immunity test
IEC 61000-4-6, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement
techniques – Immunity to conducted disturbances, induced by radio-frequency fields
IEC 61000-4-11, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement
techniques – Voltage dips, short interruptions and voltage variations immunity tests
IEC 61000-4-34, Electromagnetic compatibility (EMC) – Part 4-34: Testing and measurement
techniques – Voltage dips, short interruptions and voltage variations immunity tests for
equipment with input current more than 16 A per phase
IEC 62135-1, Resistance welding equipment – Part 1: Safety requirements for design,
manufacture and installation

CISPR 11:2009, Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement
CISPR 11:2009/AMD 1:2010
CISPR 16-1-1, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
CISPR 16-1-2, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Coupling devices
for conducted disturbance measurements
CISPR 16-1-4, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-4: Radio disturbance and immunity measuring apparatus – Antennas and
test sites for radiated disturbance measurements

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– 8 – IEC 62135-2:2015 © IEC 2015



ISO 669, Resistance welding – Resistance welding equipment – Mechanical and electrical

requirements



3 Terms and definitions


For the purposes of this document, the terms and definitions given in IEC 60050-161

concerning EMC and the relevant phenomena, given IEC 60050-851, IEC 62135-1 and

ISO 669 on resistance welding equipment, as well as the following, apply.


3.1
cable port
point at which a conductor or a cable is connected to the apparatus
Note 1 to entry: Examples are signal, control and power ports.
Note 2 to entry: The welding circuit of resistance welding equipment is not a cable port but is part of the
enclosure port.
3.2
conventional load
load condition with the electrodes short-circuiting as defined in ISO 669
3.3
conventional value
standardized value that is used as a measure of a parameter for the purposes of comparison,
calibration, testing, etc.
Note 1 to entry: Conventional values do not necessarily apply during the actual welding process.
3.4
enclosure port
physical boundary of the apparatus through which electro-magnetic fields may radiate or
impinge
3.5
EUT
equipment under test
3.6
idle state
operating mode in which the power is switched on, but the welding circuit is not energized

3.7
port
particular interface of the specified apparatus with the external electro-magnetic environment
3.8
small equipment
equipment, either positioned on a table top or standing on the floor which, including its cables
fits in a cylindrical test volume of 1,2 m in diameter and 1,5 m above the ground plane
[SOURCE: CISPR 11:2009/AMD1:2010, 3.10]

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IEC 62135-2:2015 © IEC 2015 – 9 –


4 General test requirements


4.1 Test conditions


Tests shall be carried out on completely assembled equipment representative of the series

production. Tests shall be performed within the specified operating conditions for the

apparatus at its rated supply voltage and frequency as given in IEC 62135-1. Results obtained

for RF emission and immunity at 50 Hz are valid for the same model operating at 60 Hz and

vice versa.


4.2 Measuring instruments

The measuring equipment shall comply with the requirements of CISPR 16-1-1 and the
standards referred to in Tables 1, 2 and 3 as applicable.
4.3 Artificial mains network
Measurement of the mains terminal disturbance voltage shall be made using an artificial
mains network, if commercially available, consisting of 50 Ω/50 µH V-network as specified in
CISPR 16-1-2.
The artificial network is required to provide a defined impedance at RF across the mains
supply at the point of measurement and also to provide for isolation of the equipment under
test from ambient noise on the power lines.
4.4 Voltage probe
A voltage probe as specified in CISPR 16-1-2 shall be used when the artificial mains network
cannot be used. The probe is connected sequentially between each line and the reference
earth. The probe shall consist of a blocking capacitor and a resistor such that the total
resistance between the line and earth is at least 1 500 Ω. The effect on the accuracy of
measurement of the capacitor or any other device which may be used to protect the
measuring receiver against dangerous currents shall be either less than 1 dB or allowed for in
calibration.
4.5 Antennas
In the frequency range from 30 MHz to 1 GHz the antenna(s) used shall be as specified in
CISPR 16-1-4. Measurements shall be made for both horizontal and vertical polarization. The
nearest point of the antenna(s) to the ground shall be not less than 0,2 m.
5 Test set-up for emission and immunity

5.1 General requirements
Emission and immunity testing shall be carried out on a representative resistance welding
installation as described below. Resistance welding equipment tested in such an installation
shall be considered to have met the necessary requirements of this standard.
In any situation where it is necessary to re-test the equipment to show compliance with this
standard the test setup originally chosen shall be used in order to guarantee consistency of
the results, unless it is agreed by the manufacturer to do otherwise.
If the resistance welding equipment is part of an installation, or can be connected to auxiliary
equipment
...